Electric fire alarm



Aug. 5, 1930. 1.. c. BROUTY ELECTRIC FIRE ALARM Filed March 9, 1928 Wm0T 7 7r: LO Q. KQ 3 l 14 W I O 8 Patented Aug. 5, 1930 UNITED STATESLYAL C. BROUTY, OF WATERTOWN, NEW YORK ELECTRIC FIRE ALARM Applicationfiled March 9,

This invention relates to a new product of manufacture which may beconveniently referred to as an electric fire alarm.

More specifically speaking, the invention has reference to a smallcontrivance, which includes a novel circuit closing element, wherein theparts thereof are normally held separated by a small piece of meltableparaflin or the like, but are adapted to be auto matically engaged witheach other when the paraffin melts under the action of heat from a lire.

The principal advantage of the device is the compactness and convenienceof arrangement of detail, which permits the device to be inexpensivelyconstructed in quantity lots,

( and easily handled at the time of installation by unskilled hands.

Other features and advantages of the invention will. become more readilyapparent from the following description and drawings.

In the drawings:

Figure 1 is an elevational view of the body portion of the device, withthe cover removed to expose the internal details, the section being onthe line 11 of Figure 2.

Figure 2 is, however, a central section, on the line 2-2 of Figure 1,with the cover plate in position.

Figure 8 is a view showing the wiring diagram.

Referring now to the drawings in detail, it will be observed that thecontrivance is of general circular configuration and comprises d a body4i, which is formed in its inner side with an arcuate channel 5, incommunication with the centrally disposed channel 6, which may bereferred to as the straight channel. The channel 6 is comparativelywide, and cooperating with these channels we find a pair of complementalresilient wires cooperating with each other in forming an electriccircuit closing switch. One element is designated by the numeral 7 andthe other one by the numeral 8. The element 7 comprises a longitudinallybowed portion 9 located in one branch of the arcuate channel andsuitably anchored as at 10. It also includes a free end portion 11located in the wide channel 6 and provided with a laterally directedfinger Serial No. 260,490.

7 (see Figure 2). In forming the portions, the wire merely bent around apin or the The elements 8 also comprise the 7 bowed p rtion 13 anchoredat l hand branch of the arcuate channel, and a relatively long circuitclosing i in 14 bent over and around the pin 15 and tendir down to theend of a channel 6, re it is formed into an eye 16, hearing ainst oneend of a plug of paraflin or the 21., located in the channel. Binding17, Figures 2 and 3 are threaded h orside of the body and have theirinner ends in contact with the bowed porlions of the circuit closingwires 7 and 8. Incidentally, the current supply wires 18 are connectedwith these screws or bolts as shown in F igure 3 and with a signal 19.The signal may be and preferably is a bell. The wires 18 receive currentfrom the house supply or from a battery as represented in the wiringdiagram in Figure 3. It is yet to be mentioned that the channels areclosed by a circular cover plate 9.0, fastened in place in any suitablemanner. Obviously, when the current conducting wires are fastened withthe binding screws and when the device is appropriately placed in house,in case of fire, when the heat becomes abnormal, the block or plug ofparafiin will melt and will permit the end portion 14 of the wire 8 toswing over into contact with the linger 7*, on the wire 7. This willclose the circuit and sound the alarm or give an audible signal.

It is believed that by carefully considering the description inconnection with the drawings, a clear understanding of the in ventionwill be had. Therefore a more lengthy description is regardedunnecessary.

Minor changes coming within the field of invention claimed may beresorted to, if desired.

Having thus described my invention, what is claimed is:

1. As anew product of manufacture, a circuit closer for a fire alarmcircuit comprising a substantially circular body formed in one side witha substantially semi-circular channel and a complemental intermediatestraight channel, a pair of resilient wires having longitudinally bowedportions disposed in the semi-circular channel and anehored at one endthe opposite ends of said wires being bent into said second namedchannel, one wire being formed with a lateral finger and the other wireterminating in an eye, and a fusible plug located in said second namedchannel and cooperating with said eye to hold the free end portions ofsaid wires normally spaced apart, but to allow said wires to cometogether when said plug is subjected to abnormal heat from a lire.

2. In a fire alarm of the class described, a substantially circular bodyformed on one side with an arcuate shaped channel, and a second channelcentrally disposed on the body, said second channelcommunicating at oneend thereof with the said arcuate channel intermediate the ends of saidarcuate channel. a pair of resilient wires ha ing longitudinally bowedportions disposed in said arcuate channel and anchored at one end,tl1eopposite ends of said wire being bent into said second channel, one wirebeing formed with a lateral linger, and the other wire being of a lengthgreater than said one wire and terminating in an eye, a fusible pluglocated in the said second channel and cooperating with t eye to holdthe said wire normally out of contact with the said one wire, but toallow said wires to come together when the plug is subjectec to abnormalheat from lire, and a cover plate conforming to the shape of said bodyadapted to overlie said channels for closing the same.

In testimony whereof I ailix my signature.

LYAL G. BROUT Y.

